CN102392274B - Low-temperature rapid black nickel water - Google Patents
Low-temperature rapid black nickel water Download PDFInfo
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- CN102392274B CN102392274B CN201110367158.9A CN201110367158A CN102392274B CN 102392274 B CN102392274 B CN 102392274B CN 201110367158 A CN201110367158 A CN 201110367158A CN 102392274 B CN102392274 B CN 102392274B
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Abstract
The invention relates to rapid low-temperature black nickel water for nickel plating and copper plating post-processing. The black nickel water contains components such as zinc salt, nickel salt, thiocyanate, conductive salt, water and the like. The black nickel water is characterized in that the operating temperature is 25-50 DEG C; the operating time is 1-5 min; and pH value is 4.5-5.5. The black nickel water is prepared according to the following steps of: adding 50-70% of water in the raw materials into a stirring device; successively pouring other components; finally adding the rest of the water; and stirring for at least 5 minutes to obtain the finished product. The black nickel water produced in the invention is clear, has stable performance and wide range of temperature and current density, is convenient to operate, and has long service life. As the product can be used at the temperature of 30-40 DEG C, electric energy consumed during heating process is greatly saved; in addition, the heating time is short, thus saving time.
Description
Technical field
The invention belongs to metal material surface processing technology field, specifically, relate to a kind of low-temperature rapid black nickel water.
Background technology
Black nickel coating is black, has very strong extinction capability, and some has the industry of particular requirement to be often applied to opticinstrument and photographic equipment etc., and black nickel coating has higher specific absorption to sun power, can be used for solar heat-collection plate.Recently, decorative applications aspect is at home in rising trend, especially at aspects such as clock and watch, light fixture, leather gadgets, is widely current.Black nickel coating is harder, and wear resistance and solidity to corrosion are poor, and direct black coating nickel in steel part, and the bonding force of coating and matrix is poor, and after polishing, color can shoal.Be generally the black nickel dam (only having 2mm left and right) of flash layer on bright nickel plating layer, then plate post coat or immersion oil processing, thereby obtain elegant, peculiar rifle black nickel bright coating.
Black nickel coating can be by Ni-Zn alloy electroplating bath, and Ni-Sn alloy electroplating bath obtains.In the black nickel coating of Ni-Zn, contain higher nonmetallic phase, as the sulfide of nickel, the mixture of the sulfide of zinc and organism etc.The formation of sulfide, be because thiocyanate ion reduces and dissociates sulfonium ion on negative electrode, nickel ion in plating solution, zine ion form, on negative electrode with nickel codeposition, as for black, be in coating, to exist due to black nickelous sulfide, or the color that presents of coating structure itself.From black nickel plating bath, plate black nickel coating, nickeliferous 40-60%, zinc 20-30%, sulphur 10-15%, organism 10% left and right.The degradation production of thiocyanate-is organic main source in coating.
CN 101054697A discloses a kind of black nickel plating and electroplating technology thereof, it is characterized in that black nickel plating is comprised of the raw material of following portions by weight: 1 part, sodium-chlor, 2 parts, zinc sulfate, single nickel salt 4-6 part, ammonium thiocyanate 2-3 part, complexing agent 0.2-0.4 part.By following electro-plating method black coating nickel dam on workpiece: the black nickel plating that contains 80-150kg in the electroplate liquid that configuration proportion is 1000L, temperature is at 40-50 ℃, adjust pH is at 5.5-6.5, hang into carbon plate or nickel plate anode and workpiece negative electrode to be plated, switch on power, electric current with 0.1-0.3 ampere/square decimeter is electroplated, and electroplates after 5-7 minute.Workpiece after plating carries out wire drawing processing, immersion oil or japanning to be processed.The service temperature of this invention product needs 40-50 ℃, and the operating time needs 5-7 minute, needs temperature high, and heat-up time is long, has caused the waste of the energy.
The technique of tradition black coating nickel, adds man-hour temperature and needs 50-70 ℃, and the 2000 liters of plating solutions of take are example, and heating is heated to 60 ℃ from normal temperature needs the 6-8 hour ability of electrically heated rod heating of 10000W to produce.When not plating at ordinary times, also want Heat preservation.Cause so a large amount of energy loss, tooling cost increases greatly, and the loss of time is also very large.
Summary of the invention
The present invention is directed to the series of problems that the existing black nickel water for nickel-plated and copper-plated post-treatment exists, proposed a kind of easy to operate, long service life, stable performance, service temperature is low, the black nickel water of quick low temperature that heat-up time is short.
To achieve these goals, the present invention is achieved through the following technical solutions:
The black nickel water of quick low temperature, comprises following component by massfraction:
The compound that can form complexing ion with metal ion is called complexing agent.In electroplating solution, except minority electroplate liquid, as acidic solution plating iron, nickel plating, chromium plating, copper facing are not used and maybe needn't do not used outside complexing agent, other most of electroplate liquids, as silver-plated in basic solution, gold-plated, copper facing, zinc-plated, zinc-plated, bronze (copper-tin alloy) electroplating etc. all need to use complexing agent.As prussiate, oxyhydroxide, Citrate trianion, pyrophosphate salt, thiosulphate, sulphite etc., in Electroplating Production, as complexing agent, be used widely.Black nickel water of the present invention, also comprises that massfraction is 1～5% complexing agent; The mixture of a kind of in the preferred ethylene glycol of described complexing agent, Padil, EDTA, TEA or at least two kinds; The mixture of further preferred Padil and EDTA.The complexing agent that other those skilled in the art can be known is also applicable to the present invention.
As optimal technical scheme, black nickel water of the present invention, comprises following component by massfraction:
As optimal technical scheme, black nickel water of the present invention, comprises following component by massfraction:
Preferably, black nickel water of the present invention comprises following component by massfraction:
Zinc and nickel are the main components of coating.The preferred zinc chloride of zinc salt of the present invention and/or zinc sulfate; The preferred nickelous chloride of described nickel salt; Described pH value acid regulator is the mixture of a kind of in acetic acid, citric acid, boric acid, tartrate or at least two kinds; The mixture of preferred acetic acid, citric acid, boric acid, further optimization citric acid.The common agents that can realize function of the present invention except preferred reagent of the present invention all can be used for the present invention.
The preferred ammonium chloride of conducting salt of the present invention and/or magnesium sulfate; The magnesium sulfate that the ammonium chloride that described conducting salt preferred mass mark is 10～15% and massfraction are 20～25% forms.The effect of conducting salt is the normal-temperature operation that realizes product of the present invention.
Thiocyanate-is thiocyanate ion SCN
-the salt becoming, common colourless potassium sulfocyanate, Sodium Thiocyanate 99, ammonium thiocyanate and the pharaoh's serpents of comprising.Thiocyanate ion reduces and dissociates sulfonium ion on negative electrode, on negative electrode with nickel codeposition.
Black nickel water of the present invention, comprises following component by massfraction:
Preferably, described black nickel water comprises following component by massfraction:
" comprising " of the present invention, mean it except described component, can also comprise other components, these other components give described black nickel water different characteristics.In addition, " comprising " of the present invention, can also replace with enclosed " being " or " by ... form ".
The service temperature of black nickel water of the present invention is 25～50 ℃, preferably 30 ℃, therefore belongs to low temperature (normal temperature) operation; Operating time is 1～5min, and preferably 1～2min, compares traditional technology, quicker; PH value is 4.5～5.5, and preferably pH value is 5.
The preparation of black nickel water of the present invention is undertaken by liquid stirrers, comprises the following steps: by above-mentioned each constituent mass mark, get the raw materials ready; 50～70% water in raw material is added in whipping appts; Drop into successively other components; Finally add remaining water; Stir at least 5 minutes, get product.Described churning time is 5～20min preferably, further preferred 10min.
Compare with prior art scheme, the present invention has following beneficial effect:
This product is applicable to the black decorative machining after nickel-plated and copper-plated.Screening and optimizing through formula, solves in the processing of traditional black coating nickel and needs temperature high, the shortcoming that heat-up time is long.The technique of tradition black coating nickel, adds man-hour temperature and needs 50-70 ℃, and the 2000 liters of plating solutions of take are example, and heating is heated to 60 ℃ from normal temperature needs the 6-8 hour ability of electrically heated rod heating of 10000W to produce.When not plating at ordinary times, also want Heat preservation.Cause so a large amount of energy loss, tooling cost increases greatly, and the loss of time is also very large.This product can be 30-40 ℃ of use, the electric energy having consumed while greatly having saved heating, and also heat-up time is short, saves time.The 2000 liters of plating solutions of take are example, and heating is heated to 30-40 ℃ from normal temperature needs the electrically heated rod heating of 10000W just can produce for 0.5-1 hour.In south during summer, just need not heat can processing, has improved workman's work situation.
Product of the present invention is electroplated on bright nickel bottom, can produce the black nickel coating of light; On green grass or young crops, red metal bottom, the short period of time electroplates, then produces durable antique effect through polishing; Black nickel clarification of water, stable performance; Temperature, current density range are wide; Easy to operate, long service life.
Below the present invention is described in more detail.But following example is only simple and easy example of the present invention, does not represent or limit the scope of the present invention, and interest field of the present invention is as the criterion with claims.
Embodiment
For the present invention is described better, be convenient to understand technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows:
Embodiment mono-
The black nickel water of quick low temperature, comprises following component by massfraction:
Embodiment bis-
The black nickel water of quick low temperature, comprises following component by massfraction:
Embodiment tri-
The black nickel water of quick low temperature, comprises following component by massfraction:
Embodiment tetra-
The black nickel water of quick low temperature, comprises following component by massfraction:
Embodiment five
The black nickel water of quick low temperature, comprises following component by massfraction:
Embodiment six
The black nickel water of quick low temperature, comprises following component by massfraction:
Embodiment seven
The black nickel water of quick low temperature, comprises following component by massfraction:
Embodiment eight
The black nickel water of quick low temperature, comprises following component by massfraction:
Applicant's statement, person of ordinary skill in the field is on the basis of above-described embodiment, by the concrete content point value of above-described embodiment component, combined with the technical scheme of summary of the invention part, thereby the new numerical range producing, also be one of record scope of the present invention, the application, for making specification sheets simple and clear, is no longer enumerated these numerical ranges.
The service temperature of black nickel water of the present invention is 25～50 ℃, preferably 30 ℃; Operating time is 1～5min, preferably 1～2min; PH value is 4.5～5.5, and preferably pH value is 5.
The operating parameters of product of the present invention is compared with traditional technology:
The technique of tradition black coating nickel, adds man-hour temperature and needs 50-70 ℃, and the 2000 liters of plating solutions of take are example, and heating is heated to 60 ℃ from normal temperature needs the 6-8 hour ability of electrically heated rod heating of 10000W to produce.When not plating at ordinary times, also want Heat preservation.Cause so a large amount of energy loss, tooling cost increases greatly, and the loss of time is also very large.This product can be 30-40 ℃ of use, the electric energy having consumed while greatly having saved heating, and also heat-up time is short, saves time.The 2000 liters of plating solutions of take are example, and heating is heated to 30-40 ℃ from normal temperature needs the electrically heated rod heating of 10000W just can produce for 0.5-1 hour.
The preparation of black nickel water of the present invention is undertaken by liquid stirrers, comprises the following steps: by above-mentioned each constituent mass mark, get the raw materials ready; 50～70% water in raw material is added in whipping appts; Drop into successively other components; Finally add remaining water; Stir at least 5 minutes, get product.Described churning time is 5～20min preferably, further preferred 10min.
Applicant's statement, the present invention illustrates preparation process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned preparation process, does not mean that the present invention must rely on above-mentioned preparation process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, to the selection of the interpolation of the equivalence replacement of the selected raw material of the present invention and ancillary component, concrete mode etc., within all dropping on protection scope of the present invention and open scope.
Claims (4)
1. the black nickel water of quick low temperature, is characterized in that, by massfraction, comprises following component:
Surplus is water;
The ammonium chloride that described conducting salt is 10～15% by massfraction and massfraction are that 20～25% magnesium sulfate forms;
Described complexing agent is the mixture of Padil and EDTA;
Described zinc salt is zinc chloride and/or zinc sulfate;
Described nickel salt is nickelous chloride;
Described pH value acid regulator is the mixture of acetic acid, citric acid, boric acid;
The service temperature of described black nickel water is 25～50 ℃; Operating time is 1～2min; PH value is 4.5～5.5.
2. black nickel water as claimed in claim 1, is characterized in that, described black nickel water comprises following component by massfraction:
Surplus is water.
3. black nickel water as claimed in claim 1, is characterized in that, the service temperature of described black nickel water is 30 ℃.
4. black nickel water as claimed in claim 1, is characterized in that, the pH value of described black nickel water is 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110367158.9A CN102392274B (en) | 2011-11-18 | 2011-11-18 | Low-temperature rapid black nickel water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110367158.9A CN102392274B (en) | 2011-11-18 | 2011-11-18 | Low-temperature rapid black nickel water |
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| Publication Number | Publication Date |
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| CN102392274A CN102392274A (en) | 2012-03-28 |
| CN102392274B true CN102392274B (en) | 2014-11-26 |
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| CN201110367158.9A Expired - Fee Related CN102392274B (en) | 2011-11-18 | 2011-11-18 | Low-temperature rapid black nickel water |
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Families Citing this family (2)
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| CN104630853B (en) * | 2013-11-12 | 2018-07-27 | 北京中科三环高技术股份有限公司 | A method of in neodymium iron boron magnetic body black nickel plating |
| KR102619262B1 (en) * | 2016-01-29 | 2023-12-28 | 스미토모 긴조쿠 고잔 가부시키가이샤 | Blackening plating solution and conductive substrate manufacturing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054697A (en) * | 2007-02-12 | 2007-10-17 | 伟业重工(安徽)有限公司 | Plating black nickel and plating technique thereof |
| CN101550573A (en) * | 2009-04-17 | 2009-10-07 | 昆明理工大学 | Zinc-nickel alloy electrolyte |
-
2011
- 2011-11-18 CN CN201110367158.9A patent/CN102392274B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101054697A (en) * | 2007-02-12 | 2007-10-17 | 伟业重工(安徽)有限公司 | Plating black nickel and plating technique thereof |
| CN101550573A (en) * | 2009-04-17 | 2009-10-07 | 昆明理工大学 | Zinc-nickel alloy electrolyte |
Non-Patent Citations (2)
| Title |
|---|
| 电镀黑镍合金工艺的进展;邹坚;《电镀与精饰》;19901130;第12卷(第6期);18-20 * |
| 邹坚.电镀黑镍合金工艺的进展.《电镀与精饰》.1990,第12卷(第6期),18-20. * |
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Effective date of registration: 20170405 Address after: 523755 Guangdong city of Dongguan Province Huang Town board Hubei five Street No. nine Patentee after: Dongguan Bao Zhong Industrial Development Co.,Ltd. Address before: 401 No. 523755 Guangdong city of Dongguan Province Huang Huang Jiang Town Road Patentee before: DONGGUAN DONGHUI TRADE Co.,Ltd. |
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